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olsworldFlag for India

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Gear design for a clock

Basically I am looking for gear / shaft design to build a manual clock.  I should be able to move second / minute hand manually and proportionately minute and hour hand should move (i.e. moving second hand by 60' (10 seconds) will move minute hand by 1' and moving minute hand by 12' (2 minutes) will move hour hand by 1' --it does not have to be so precise and moving minute hand by 30' (5 minutes) will move hour hand by 2.5' or similar proportion is fine).

I am looking for the design in printable format.  I should be able to cut cardboard and build the clock.
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Dr. Klahn

You can buy the entire printed book, with instructions, off fleabay for just over $7.

https://www.ebay.com/sch/i.html?_from=R40&_nkw=%28make%2Cmaking%29+working+paper+clock&_sacat=0&LH_TitleDesc=0&_sop=15&_osacat=0&_odkw=working+paper+clock

Having built one, I would note two things:

a) The paper used is quite thick and would not feed well through an inkjet or laser printer.

b) "Considerable" patience and precision is required to make one that actually works.
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